YPF SA, Nokia Corp, Home Depot Inc, Home Depot Inc, Arcelormittal, Arch Coal Inc, Royal Bank of Scotland Group plc and Weatherford International Ltd. are among the companies whose shares are moving in pre-market trading Monday.

Royal Dutch Shell announced plans to spend at least $1 billion a year exploiting China's supply of shale gas, Reuters reported. The news came from the energy firm's head executive in China, Lim Haw Kuang, who responded to Reuters' questions about the alleged $1 billion-a-year plan to invest in the potentially vast natural gas trove.

Richmond, Calif., a city of about 104,000 residents, is home to heavy industry and is familiar with such incidents. Accidents can be potentially hazardous to surrounding communities. Sulfur dioxide, sulfur trioxide, hydrogen sulfide have serious health effects in high atmospheric concentrations.

Thousands of Ecuadoreans this week are trying to force Chevron Corp., the second-largest U.S. oil and gas company, into complying with a verdict and paying billions in environmental fines resulting from a decade-long pollution case.

New York Comptroller Thomas DiNapoli renewed his call on Friday that Chevron Corp. (NYSE: CVX), the second-largest oil company in the U.S., settle its legal battle against a multibillion-dollar judgment in Ecuador, to avoid further damaging its reputation and shareholder value.

Brazilian oil company Petrobras, which helps U.S.-based Chevron develop offshore oil fields in Brazil, said regulators there are not likely to shut down Chevron's operations in the Frade oil field in the wake of oil spills.

The Japanese government and local companies will buy a 10 percent stake in Chevron Corp. (CVX)'s Wheatstone natural gas field in Australia for 350 billion yen ($4.37 billion), Nikkei newspaper reported.

Ukrainian Prime Minster Mykola Azarov announced on Tuesday that Ukraine will ramp up its natural gas production by up to 25 percent over the next three years, a move that could help the country break free of its energy dependence on neighboring Russia.

A group of Chevron Corp., shareholders has asked that the Securities and Exchange Commission investigate claims the oil major is not fully disclosing the effect that a multi-billion dollar environmental case in Ecuador would have on the company and its numerous stakeholders.